I started having a problem on several machines a few days ago, they will get a new WU, say it is running, but no work will be occuring. I can abort the unit, and the new one will usally start working. Sometimes not, and I have to abort more than one. Some of these are 4 core machines, they will run 1,2,or 3, but the remainder just sit there in the running or running high priority state with no progress actually occuring. Very aggrevating. Is this happening to anyone else?

And I don't know where you got the BOINC 6.1.0 from, but the one from Berkeley was never intended for actual use. It was a testing version for the developers only.
Alpha testing of 6.1 has officially started today. Jord

Ancient Astronaut Theorists suggest that in many ways, you can be considered an alien conspiracy!

I have stopped/started BOINC, rebooted, etc, even detached and reattached to project, with no help. BOINC 6.1.0? I am running 5.1.28 and 5.1.30. I am running an optimized app, but have been for months with no problems. Any other suggestions?

I have stopped/started BOINC, rebooted, etc, even detached and reattached to project, with no help. I am running 5.1.28 and 5.1.30. I am running an optimized app, but have been for months with no problems. Any other suggestions?

I think your tasks are restarting. Without the correct cc_config.xml flags set that's just an observation, though. If you want to, you can set the flags.
See in this FAQ how to set up the cc_config.xml file, if you don't have one yet.

The flags to enable are <sched_op_debug> and <checkpoint_debug>

Other threads on restarting tasks can be found here and here.
Although the developers have tried to fix it in the last updates all up to 5.10.45, it's still a recurring problem for some.

Thanks for the info on restarting threads, I will research that...as for the 6.0, I dont understand why that result is showing that...if I do a 'help', 'about BOINC' I get 5.1.30. I dont know where the 6.1 is coming from. I only DL from the main setup/download site. An enigma in a conundrum!

It's possible you run the 6.1.0 client, with a 5.10.30 BOINC Manager (GUI).
best check the boinc.exe on that machine, right clicking it, properties, version will definitely show what its version number is.

At least it has no effect on the restarting problem as that happens on all versions of 5.10.20+ (6.1.0 is technically a 5.10 version, as it was compiled with the same code as 5.10.28), where multiple CPUs are used and CPU throttling is used. Jord

Ancient Astronaut Theorists suggest that in many ways, you can be considered an alien conspiracy!